la impartirea cu 23 `resturile pot fi: 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18, 19,20,21,22.
9x23+0=207
9x23+1=208
9x23+2=209
9x23+3=210
9x23+4=211
9x23+5=212
9x23+6=213
9x23+7=214
9x23+8=215
9x23+9=216
9x23+10=217
9x23+11=218
9x23+12=219
9x23+13=220
9x23+14=221
9x23+15=222
9x23+16=223
9x23+17=224
9x23+18=225
9x23+19=226
9x23+20=227
9x23+21=228
9x23+22=229
207+208+209+210+............+229=
obseam ca lipsesc numerele 1+2+..........+206
facem asa
1+2+...+206=206x(206+1):2=206x207:2=42642:2=21321
207+208+.......+229=229x(229+1):2-21321=229x230:2-21321=52670:2-21321=26335-21321=5014
asta e tot
